| 摘要 |
The needle is joined to a supply tube (2) and pivots in a case (3) between a position to puncture the skin and a retracted position. A push button (7) is moved in one end of the case, by the index finger, and moves the needle. The needle is fixed to a shaft that pivots in the case. The shaft has two cams (5) and one cam is moved by the button to turn the shaft and move the needle out of the case. The other cam is moved when the button is released and retracts the needle.
|
